ARM vs. UMC: Arm Holdings vs. United Microelectronics Stock Comparison
How do Arm Holdings (ARM) and United Microelectronics (UMC) stack up? This page sets them side by side across company profile, performance and risk, profitability, growth, financial strength, dividends, and valuation, with selected fundamentals also measured against each stock's industry-group peers.
Company Profile
Arm Holdings (ARM) and United Microelectronics (UMC) are both classified in the Semiconductors sub-industry within the broader Semiconductors & Semiconductor Equipment industry, placing them in the closest GICS peer bucket.
United Microelectronics (UMC) has more than two decades of public-market history since September 19, 2000, whereas Arm Holdings (ARM) listed on September 14, 2023 and has a much shorter record to draw on.
Both Arm Holdings (ARM) and United Microelectronics (UMC) trade as ADRs — their core financials are comparable, but keep FX, depositary-program fees, and dividend withholding in view for each.
| Profile Item | ARM | UMC |
|---|---|---|
| Name | Arm Holdings plc ADR | United Microelectronics Corp. ADR |
| Country/Region | United Kingdom | Taiwan |
| GICS Sector | Information Technology | Information Technology |
| GICS Industry Group | Semiconductors & Semiconductor Equipment | Semiconductors & Semiconductor Equipment |
| GICS Industry | Semiconductors & Semiconductor Equipment | Semiconductors & Semiconductor Equipment |
| GICS Sub-Industry | Semiconductors | Semiconductors |
| Market Capitalization | 186.84 billion USD | 34.73 billion USD |
| Currency | USD | USD |
| Exchange | Nasdaq | NYSE |
| Listing Date | September 14, 2023 | September 19, 2000 |
| Security Type | ADR | ADR |
Price Performance
Cumulative Growth
Trailing Returns
Calendar-Year Returns
Performance Metrics
| Metric | ARM | UMC |
|---|---|---|
| Total Return (1Y) | 23.60% | 102.63% |
| Total Return (3Y, Annualized) | 53.99% | 31.57% |
| Total Return (5Y, Annualized) | -- | 11.51% |
Risk Profile
Drawdown History
Return Distribution
Risk Metrics
| Metric | ARM | UMC |
|---|---|---|
| Volatility (1Y, Annualized) | 82.24% | 67.94% |
| Beta (5Y) | 3.92 | 1.77 |
| Max Drawdown (5Y) | -62.06% | -54.30% |
| Avg. Volume (3M) | 5.05M | 11.82M |
Risk-Adjusted Performance
Risk-Return Positioning
Risk-Adjusted Metrics
| Metric | ARM | UMC |
|---|---|---|
| Sharpe Ratio (1Y) | 0.23 | 1.45 |
| Sortino Ratio (1Y) | 0.38 | 2.35 |
Profitability
ROE (TTM)
Both Arm Holdings (ARM) at 11.35% and United Microelectronics (UMC) at 20.37% land near their industries’ usual ROE ranges, so capital efficiency looks broadly in line with peers on both sides.
ARM
Semiconductors & Semiconductor Equipment industry group
11.35%
- Max
- 52.82%
- Q3
- 22.26%
- ARM
- 11.35%
- Median
- 10.58%
- Q1
- 1.29%
- Min
- -16.89%
UMC
Semiconductors & Semiconductor Equipment industry group
20.37%
- Max
- 52.82%
- Q3
- 22.26%
- UMC
- 20.37%
- Median
- 10.58%
- Q1
- 1.29%
- Min
- -16.89%
Net Margin (TTM)
United Microelectronics (UMC) at 31.95% retains a top-quartile share of revenue as profit, ahead of Arm Holdings (ARM) at 17.13%, which keeps about the industry-typical share.
ARM
Semiconductors & Semiconductor Equipment industry group
17.13%
- Max
- 63.80%
- Q3
- 28.36%
- ARM
- 17.13%
- Median
- 11.44%
- Q1
- 0.90%
- Min
- -37.77%
UMC
Semiconductors & Semiconductor Equipment industry group
31.95%
- Max
- 63.80%
- UMC
- 31.95%
- Q3
- 28.36%
- Median
- 11.44%
- Q1
- 0.90%
- Min
- -37.77%
Operating Margin (TTM)
Both Arm Holdings (ARM) at 13.93% and United Microelectronics (UMC) at 25.09% run core operations about as efficiently as their industries’ norm — neither stands out on operating profitability.
ARM
Semiconductors & Semiconductor Equipment industry group
13.93%
- Max
- 58.66%
- Q3
- 30.23%
- Median
- 15.91%
- ARM
- 13.93%
- Q1
- 7.54%
- Min
- -25.74%
UMC
Semiconductors & Semiconductor Equipment industry group
25.09%
- Max
- 58.66%
- Q3
- 30.23%
- UMC
- 25.09%
- Median
- 15.91%
- Q1
- 7.54%
- Min
- -25.74%
Profitability Metrics
| Metric | ARM | UMC |
|---|---|---|
| ROE (TTM) | 11.35% | 20.37% |
| ROA (TTM) | 5.50% | 5.79% |
| Net Margin (TTM) | 17.13% | 31.95% |
| Operating Margin (TTM) | 13.93% | 25.09% |
| Gross Margin (TTM) | 97.44% | 31.72% |
Growth
Revenue Growth
Both Arm Holdings (ARM) at 22.79% and United Microelectronics (UMC) at 2.26% land near their industries' usual revenue growth ranges, so top-line momentum looks broadly in line with peers on both sides.
EPS Growth
Both Arm Holdings (ARM) at 13.33% and United Microelectronics (UMC) at -12.57% land near their industries' usual EPS growth ranges, so bottom-line momentum looks broadly in line with peers on both sides.
Growth Metrics
| Metric | ARM | UMC |
|---|---|---|
| Revenue Growth (YoY) | 22.79% | 2.26% |
| Revenue Growth (3Y CAGR) | 22.46% | -5.19% |
| EPS Growth (YoY) | 13.33% | -12.57% |
| EPS Growth (3Y CAGR) | 18.51% | -21.92% |
Financial Strength
Current Ratio (MRQ)
United Microelectronics (UMC) at 3.27 keeps current ratio within its industry’s typical mid-range, while Arm Holdings (ARM) at 6.35 sits above its industry’s typical mid-range — comfortable liquidity, though possibly with more idle current assets relative to peers.
ARM
Semiconductors & Semiconductor Equipment industry group
6.35
- Max
- 10.33
- ARM
- 6.35
- Q3
- 5.62
- Median
- 3.33
- Q1
- 2.35
- Min
- 1.03
UMC
Semiconductors & Semiconductor Equipment industry group
3.27
- Max
- 10.33
- Q3
- 5.62
- Median
- 3.33
- UMC
- 3.27
- Q1
- 2.35
- Min
- 1.03
Debt / Equity (MRQ)
Both Arm Holdings (ARM) at 0.06 and United Microelectronics (UMC) at 0.17 fund their balance sheets with roughly industry-typical debt-to-equity mixes.
ARM
Semiconductors & Semiconductor Equipment industry group
0.06
- Max
- 1.46
- Q3
- 0.65
- Median
- 0.27
- ARM
- 0.06
- Q1
- 0.04
- Min
- 0.00
UMC
Semiconductors & Semiconductor Equipment industry group
0.17
- Max
- 1.46
- Q3
- 0.65
- Median
- 0.27
- UMC
- 0.17
- Q1
- 0.04
- Min
- 0.00
Financial Strength Metrics
| Metric | ARM | UMC |
|---|---|---|
| Current Ratio (MRQ) | 6.35 | 3.27 |
| Debt / Equity (MRQ) | 0.06 | 0.17 |
| Net Debt / EBITDA | -2.77 | -0.60 |
Dividends
Dividend Yield (TTM)
Arm Holdings (ARM) pays no dividend (yield 0.00%) — it may be reinvesting, using buybacks, or simply not returning cash through dividends. Meanwhile United Microelectronics (UMC) reports a yield of 19.43%, ranking against industry peers normally.
ARM
Semiconductors & Semiconductor Equipment industry group
0.00%
- Max
- 1.37%
- Q3
- 0.65%
- ARM
- 0.00%
- Median
- 0.00%
- Q1
- 0.00%
- Min
- 0.00%
UMC
Semiconductors & Semiconductor Equipment industry group
19.43%
- UMC
- 19.43%
- Max
- 1.37%
- Q3
- 0.65%
- Median
- 0.00%
- Q1
- 0.00%
- Min
- 0.00%
Dividend Payout Ratio (TTM)
Arm Holdings (ARM) pays no dividend (payout 0.00%) — it may be reinvesting, using buybacks, or simply not returning cash through dividends. Meanwhile United Microelectronics (UMC) reports a payout of 37.46%, ranking against industry peers normally.
ARM
Semiconductors & Semiconductor Equipment industry group
0.00%
- Max
- 49.64%
- Q3
- 21.71%
- ARM
- 0.00%
- Median
- 0.00%
- Q1
- 0.00%
- Min
- 0.00%
UMC
Semiconductors & Semiconductor Equipment industry group
37.46%
- Max
- 49.64%
- UMC
- 37.46%
- Q3
- 21.71%
- Median
- 0.00%
- Q1
- 0.00%
- Min
- 0.00%
Dividend Metrics
| Metric | ARM | UMC |
|---|---|---|
| Dividend Yield (TTM) | 0.00% | 19.43% |
| Dividend Payout Ratio (TTM) | 0.00% | 37.46% |
Valuation
P/E Ratio (TTM)
United Microelectronics (UMC) at 13.07 sits in the cheaper P/E ratio quartile, while Arm Holdings (ARM) at 200.71 trades above its peer range — a wide earnings-valuation gap relative to industry peers.
ARM
Semiconductors & Semiconductor Equipment industry group
200.71
- ARM
- 200.71
- Max
- 110.34
- Q3
- 66.81
- Median
- 37.02
- Q1
- 23.96
- Min
- 8.12
UMC
Semiconductors & Semiconductor Equipment industry group
13.07
- Max
- 110.34
- Q3
- 66.81
- Median
- 37.02
- Q1
- 23.96
- UMC
- 13.07
- Min
- 8.12
P/S Ratio (TTM)
United Microelectronics (UMC) at 0.13 sits in the cheaper P/S ratio quartile while Arm Holdings (ARM) at 34.20 prices above its industry range — a wide gap in sales valuation between them.
ARM
Semiconductors & Semiconductor Equipment industry group
34.20
- ARM
- 34.20
- Max
- 21.42
- Q3
- 12.27
- Median
- 5.76
- Q1
- 2.73
- Min
- 0.00
UMC
Semiconductors & Semiconductor Equipment industry group
0.13
- Max
- 21.42
- Q3
- 12.27
- Median
- 5.76
- Q1
- 2.73
- UMC
- 0.13
- Min
- 0.00
P/B Ratio (MRQ)
United Microelectronics (UMC) at 2.39 sits near its industry’s typical P/B ratio, while Arm Holdings (ARM) at 20.56 prices above its benchmark range — ARM looks rich relative to book.
ARM
Semiconductors & Semiconductor Equipment industry group
20.56
- ARM
- 20.56
- Max
- 14.06
- Q3
- 7.44
- Median
- 4.29
- Q1
- 2.30
- Min
- 0.20
UMC
Semiconductors & Semiconductor Equipment industry group
2.39
- Max
- 14.06
- Q3
- 7.44
- Median
- 4.29
- UMC
- 2.39
- Q1
- 2.30
- Min
- 0.20
Valuation Metrics
| Metric | ARM | UMC |
|---|---|---|
| P/E Ratio (TTM) | 200.71 | 13.07 |
| P/S Ratio (TTM) | 34.20 | 0.13 |
| P/B Ratio (MRQ) | 20.56 | 2.39 |
| Free Cash Flow Yield (TTM) | 0.61% | 129.43% |